Metallic car-underframe.



No. 789,391. AATBNTBD MAY 9, 1905.

i A. STUGKI. METALLIC GAR UNDERFRAMB.

APPLICATION FILED FBB.` 3, 1905.

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PATENTED MAY 9, 1905.

A sTUcKI. METALLI@ GAR UNnERPRAMB.

APPLICATION FILED FEB. 3, 1905.

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y UNITED STATES Patented May 9, 1905.

PATENT OEEICE.

ARNOLD STUOKI, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR TO STAND- ARD STEELOAR COMPANY, OF PITTSBURG, PENNSYLVANIA, A OOR- PORATION OFPENNSYLVANIA.

NIETALLIG CAR-UNDERFRANIE.

SPECIFICATION forming part of Letters Patent No. 789,391, dated May 9,1905.

Application filed February 3, 1905. Serial No. 244,082.

To al?, whom, it may concern.-

Be it known that I, ARNOLD STUGKI, a resident of Allegheny, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Metallic Oar- Underframes; and I do hereby declarethe following to be a full, clear, and exact description thereof.

My invention relates to metallic under- IO frames for railway-cars, andmore especially to underframes for cars having a horizontal floor.

The object of my invention is to improve car-underframes in particularshereinafter de- I5 scribed and claimed.

In the accompanying drawings, Figurel is a plan view of one-half of theunderi'rame with the ioor removed and showingl transverselyarrangedhoppers. Fig'Q is a vertical longitudinal section on the line 2 2,Eig. 1. Fig. 3 is a transverse section on the line 3 3, Fig. l. Fig. 4Lis a transverse section on the line I 4, Fig. 1; and Fig. 5 is aperspective view of one of the brackets for the licor-supports. Myimproved car-underframe comprises a center sill l, body-bolsters 2,draft-sills 3, end sill 4, and side sills 5. The latter, however, arenot necessary in all types of cars, as the metallic side walls ofcertain cars can be formed as plate-girders and act not only to confinevthe lading, but also as a sill to carry part of the load.

The body-bolster may be or' any preferred type, that shown comprisingweb lilling members extending between the sills and suitably securedthereto at their ends, together with top and bottom cover-plates. Thisconstruction, however, is old and `forms no part of my invention, as anyform of bolster will 40 answer the purpose. The draft-sills and endsills likewise may be oi' any suitable or preferred type. The drawingsshow diagonal braces 6 extending Jfrom the corners of the underi'rame tothe intersection of the draft-sills and body-bolsters; but these alsoare old and form no part of the invention. The side sills 5 when usedmay be of any form of beam,

either trussed or otherwise, those shown in the drawingsbeing rolledchannel-beams.

The center sill l is of a special trussed construction. It comprises apair -o'f parallel beams 8, which may be ot' any suitable form, eitherrolled shapes or oi a built-up plategirder type, those shown beingrolled channel-beams, these being preferred, as they provide smoothinner faces for the attachment ot braces and struts. These parallelbeams 8 form the compression member ot the truss. The tension member isformed by a suitable member 9, which may be either a rolled commercialshape, such as the channelbeam shown, or an I-beam, or of a built-uptype having' a horizontal web l() and edge flanges 1l. The ends of thistension member project between the parallel beams 8, and the [langes Ilof the tension 'member are riveted to the webs of the latter, as shownin Figs. 2 and et. The lianges of the tension member 9 are preferablydirected downwardly, so as to facilitate riveting to the beams 8 andalso to provide for a more convenient attachment for the strut andcross-bearers.

Intermediate its ends the tension member is separated from thecompression member, and interposed between the two is a strut or strutsl2, two such `struts being used in the design ol car shown in 'thedrawings, one on either side of the transverse centerl thereof. Only oneof these struts appears in the drawings. This strut may be ol anysuitable form; but for convenience it will be provided'with a web 13,extending transversely between the beams 8 and havingl edge l'langes leteither integral therewithor riveted thereto, these [langes serving as aconvenient means Afor attachment to the beams 8. The particular strutshown is a pressed pan-shaped member having not only the edge flanges14, but also end lianges 15. The iiange 15 at the lower end serves asaconvenient means for riveting directly to the web of the tension member9. The anges 15 may be omitted, il desired.

Suitable cross-bearers ol truss type are provided at one or more points,preferably at the points ot' the application of the struts 12. Thesecross-bearers havea compression member 16 of some suitable ianged shape,such as the angle shown, having a vertical leg 17, which is riveted tothe web of the strut 12 at its lower end, and a horizontal flange 18,which rests upon and is riveted to the web of the tension member 9. Thisangle-shaped cross-bearer member therefore serves as a knee-piece foruniting' the strut tothe tension member 9, and the riveting' of thelower fiang'e 15 of the strut to the tension member may be dispensedwith, if desired. The tension member of the cross-bearer is formed bythe upper end of the strut l2, lling-pieces 20, extending' from thecenter to the side sills and suitably connected to both by means ofangle-plates 21, and a transverse tie member 22, extending' continuouslyacross the center sill toward the sides of the car and riveted to thefilling-pieces 20 on opposite sides of the center sill. The outer endsof the compression member 16 of the cross-bearer are connected to thelilling-pieces 2O by means oi' connection-plates 23.

The particular underirame shown is provided with transversely-arrangedhoppers between the center and side sills, said hoppershavinghorizontalwoodendoors24. Thesides of the hoppers are formed byinclined hopper-sheets 25, ianged at their ends and riveted to thecenter and side sills. These sheets at their lower edges are stil'enedby means of angles 26 and at their upper ends by means ofhorizontally-bent portions 27. The hopper-sheets nearest the transversemiddle oi" the car have their horizontal portions 27 resting' upon thefilling-pieces 2O of the crossbearers.

The Hoor 29 is a wooden one and is secured to longitudinalnailing-strips 30, which are substantially flush with the top of themetallic underframe and are supported at their ends on brackets 31,secured to the crossbearers and body-holsters. Those next to thebody-holsters have their inner ends supported in brackets or pockets 32,formed, preferably, of pressed metal and shown in detail in Fig. 5 andriveted to the inclined hopper-sheets 25.

The underframe described is exceedingly strong' in comparison to itsweight. The eenter-sill construction especially is exceedingly rigid notonly vertically, but also laterally, the latter being due to thehorizontally-disposed web oi' the tension member 9. The connection ofthe cross-bearer with this deeptrussed center sill also is very simpleand affords maximum strength for weight of material used. Simplicity andcheapness in erecting is an important advantage, it requiring' thedriving of a comparatively small number of rivets and all easy ofaccess.

l/Vhat I claim ish 1. In a metallic car-underframe, the combination ofbody-bolsters, and a trussed longitudinal sill comprising compressionand tension members and a strut, said compression member comprising twoparallel beams and said tension member having a web disposedhorizontally and langes at the edges of said web, said tension member atits ends extending between the parallel beams of the compression memberand having its flanges riveted to the latter and terminating at thebodyholsters.

2. In a metallic car-underframe, the combination of body-holsters, and atrussed long'itudinal sill comprising compression and tension membersand a strut, said compression member comprising two parallel beams, andsaid tension member being a ianged beam with its web disposedhorizontally and at its ends extending between the parallel beams of thecompression member and terminating at the body-bolsters and having itsflanges riveted to the compression mem ber.

3. In a metallic car-underframe, the combination of body-holsters, and atrussed longitudinal sill comprising compression and tension members anda strut, said compression member comprising two parallel beams, and saidtension member being a channel-beam with its web disposed horizontallyand at its ends extending' between the parallel beams of the compressionmember and having'its flanges riveted to the latter and terminating atthe body-holsters.

4. A trussed longitudinal car-sill comprising compression and tensionmembers and a strut, said compression member comprising two parallelbeams, said tension member having a web disposed horizontally andflanges, and said strut having' a vertical web arranged transversely andiianges on the edges of said web riveted to the parallel beams of thecompression member.

A trussed longitudinal car-sill comprising compression and tensionmembers and a strut, said compression member comprising two parallelbeams, said tension member having a web disposed horizontally and iangesat the edges of s'aid web, said tension member at its ends extendingbetween the parallel beams of the compression member and having' itsflanges riveted to the latter, and said strut comprising' a vertical webarranged transversely and having flanges riveted to the parallel beamsof the compression member and its lower end suitably secured to thetension member.

6. A trussed longitudinal car-sill comprising compression and tensionmembers and a strut, said compression member comprising two parallelbeams, said tension member being' flanged, and said strut comprising avertical web disposed transversely and having' iianges riveted betweensaid parallel beams of the compression member and having its lower endsecured to the tension member.

7. A trussed longitudinal car-sill compris- IOO IOS

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ing compression and tension members and a strut, said compression membercomprising two parallel beams, said tension member being llanged,andsaid strut comprising a pressed plate provided with flanges on itsedges, said plate being disposed vertically With its upper end lyingbetween the parallel beams of the compression member and its flangesriveted to the latterand having its lower end secured to the tensionmember.

8. A metallic car-undert'rame comprising a trnssed center sill composedof parallel beams forming a compression member, a tension member havinga Web disposed horizontally and flanges at the edges of said web rivetedto the parallel beams, a strut provided with flanges for riveting to theparallel beams, and a cross-bearer member extending across the tensionmember of the sill at the strut and secured to both.

9. A metallic car-underframe comprising a trussed center sill having apair of parallel beams forming the compression member, a tension memberhaving a web disposed horizon tally and anges at the edges of said webriveted to the parallel beams, a strut provided with anges for rivetingto the parallel beams, and a flanged cross-bearer member extendingacross the tension member at the strut and having one flange riveted tosaid tension member and another flange riveted to the lower end of thestrut. I

l0. In a metallic car-underframe, the combination of longitudinal sillsand transoms,

' hopper-sheets extending transversely of the car, and longitudinalfloor-supports snpported by the transoms and hopper-sheets.

11. In a metallic car-nnderframe, the com bination of longitudinal sillsand transoms, hopper-sheets extending transversely of the car,bracketssecured to said hopper-sheets, and longitudinal 'floor-supportssupported at one end by said brackets and at their opposite ends by atransom.

In testimony whereof I, the said ARNOLD STUCKI, have hereunto set myhand.

ARNOLD STUCKI.

Witnesses:

ROBERT C. ToT'rEN, G. KREMER.

